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if the sum of all the terms of an AP : 1,4,7,10........x is 287 then find x

Asked by Mohammad Ibrahi...(student) , on 2/2/13

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  1 + 4 + 7 + 10 +.... + x = 287

Let there be n terms in the A.P.

if u like this answer...plz thumbs up....

Posted by Bhaveen(student)on 2/2/13

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